Chapter 5 General Reference 105
FREQUENCY ITEM KEY INSPECTION DESCRIPTION STATUS
Pumps and Motors for loose bolts/fasteners, leaks, noise, vibration,
loss of performance, heating & excess pressure.
Hydraulic valves for cracks, spool return to neutral, sticking spools,
proper relief valve setting, relief valve failure.
• Stabilizer or auxiliary control valve(s)
Hydraulic cylinders for drifting, rod seal leakage and leakage at
welds. Rods for nicks, scores and dents. Case for damage. Case
and rod ends for damage and abnormal wear.
• Jib extension cylinder(s)
Winch, sheaves and drums for damage, abnormal wear, abrasions
and other irregularities.
Hydraulic filters for replacement per maintenance schedule.
All daily inspection items.
All monthly inspection items.
All quarterly inspection items.
Hydraulic fluid change per maintenance schedule.
Control valve calibration for correct pressure & relief valve settings.
Safety valve calibration for correct pressure & relief valve settings.
Valves for failure to maintain correct settings.
Rotation drive system for proper backlash clearance & abnormal
wear, deformation and cracks.
Gear oil change in rotation drive system per maintenance schedule.
Check tightness of all fasteners and bolts, using torque specifications
on component drawings or torque chart.
Wear pads for excessive wear.
Loadline for proper attachment to drum.